In recent years, although the juvenile justice system in China construction has made a breakthrough development, social contradictions have become increasingly prominent in the important social strategic transition period. The juvenile crime presents new characteristics, while the matched juvenile justice construction is both slightly lagging behind both in theory and in the system construction. Obviously, it is necessary to develop the professional construction of juvenile criminal defense, and its development degree is also an important indicator of the quality of judicial construction. In view of this, through the analysis of the current situation of the development of juvenile criminal defense, the development strategy of the professional construction of criminal defense in juvenile cases is proposed.